What is the difference between an opinion and a judgement?

An opinion is more of a belief.

A judgement is coming to sensible conclusions

Opinion is one's personal views on a certain topic. It is usually not supported by any physical evidence. It is based on the beliefs and principle one has about certain things in life.

Judgement is a verdict given based on the study or analysis of the physical evidence presented. It is corroborated by certain standards and is drawn from sensible conclusions.